Eyeglasses.



PATENTED AUG. 2, 1904.

L. F. ADT.

EYEGLASSES.

APPLIOATION FILED JULY 15, mos.

NO MODEL.

Inventor.

\ virnesses.

Attorney- Patented August 2, 1904.

PATENT OFFICE.

LEO F. ADT, OF TRGY, NElV YORK.

EYEGLASSES.

SPECIFICATION forming part of Letters Patent N 0. 766,570, dated August 2, 1904.

Application filed July 15, 1903.

1'!) LN w/tont it ntcty concern:

Be it known that I, LEO F. ADT, of Troy, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements inEyeglasses; and Ido hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference-numerals marked thereon.

My present invention relates to improvements in eyeglasses, and more especially to that class employing an elastic or spring bridge, and has for its object the production of a device of this character having resilient portions formed in the bridge thereof and so disposed in relation to the guards that a maximum separating motion thereof is produced with a given adjustment of the parts.

It is also an object of my said invention to produce a device of this character wherein tilting or relative motion between the lenses in the vertical plane is effectually resisted, and I accomplish this result by forming the bridge of elastic material. preferably having a flat cross-section and so disposed as to yield in substantially a horizontal plane.

Other features of novelty and advantage will be hereinafter more fully explained, and pointed out in the claims hereunto annexed.

In the drawings, Figure l is a front elevation of a device embodying my invention. Figs. 2 and 3 are plan views showing the relation of the parts at different adjustments. Fig. 4 is a sectional view on the line 4 4, Fig. 1; and Fig. 5 is a fragmentary view of my invention as employed with a single screw-lens attachment.

The same numerals of reference in the several figures indicate similar parts.

In the present embodiment of my invention 1 designates the bridge spring or bow, preferably of flat material arched centrally to conform to the contour of the nose and adapted, if desired, to rest upon the nose, the free ends thereof extending outwardly to points intermediate between but forward of the posterior surface of the lenses 2 2, said ends thence bending forwardly, inwardly, rearwardly, and then outwardly to form the coils 3 3, disposed be- Serial No- 165,580. (No model.)

tween but forwardly of the posterior surface of the lenses. The free ends 4 4 of the coils thus formed are attached to the lens-clips 5 5, secured to the lenses in any suitable manner, the lugs 6 6 thereon retaining the parts from relative motion. Extending rearwardly from and attached to the clips 5 5, such as by the screws 7 T, as shown in Fig. 4, are arms 8 8, bent at 9 and provided with the guardsor nose-clamps 1O 10 at their rearrnost extremities, the point of attachment of said guards being preferably intermediate their ends.

By the above construction it will be observed that the guards 1O 10 are located immediately in rear of the coils 3 3, and as the guards are in rear and the coils forward of the posterior faces of the lenses and motion of said guards will be about said coils as centers the maximum outward motion of said guards will be secured with a minimum adjustment of the lenses.

In Fig. 5 the device is shown applied to a single screw-clip, and in this form the free end 4 of the spring will be passed through the perforation of the lug 11 of the clip 12, and the free end of the guard-arm 8 will be similarly placed, the screw 3 being passed through the parts, securing them to the lenses. However, the characteristic principles of this form and that shown in Figs. 1 to 4, inclusive, are similar.

It is obvious that an eyeglass constructed in accordance with this invention possesses the utmost simplicity and that a maximum outward movement of the guards with a given adjustment of the lenses is secured, the amount of which movement may be varied by altering the distance of said coils in front of the rear faces of the lenses.

It is also obvious that in the present construction there are no overlapping parts to obstruct the field of the lenses and that by attaching the bridge-spring to the lenses at a point immediately adjacent or in approximately the same horizontal plane with the coils and employing a bridge-spring formed of flat material forces tending to tilt the outer extremities of the lenses in a vertical plane are effectually resisted and avoided.

It will be of course understood that two or more coils maybe employed, if desired, to increase the resiliency of the parts and that other alterations may be made which would come within the scope of my invention.

- I claim as my invention 1. In eyeglasses the combination with the lenses, of a bridge-piece of flat material connecting said lenses, horizontally-disposed coils formed therein having their ends attached to said lenses at points in approximately the same horizontal plane with said coils, and guards also attached to said lenses, and arranged in rear of said coils.

2. In eyeglasses, the combination with the lenses of an elastic bridge composed of flat material, connecting said lenses, resilient coils formed in said bridge and located inwardly between and forwardly of the posterior faces of the lenses, and having their ends extending outwardly in a horizonal plane, and attached to said lenses, and guards attached to said lenses and located directly in rear of said coils.

3. In eyeglasses, the combination with the lenses, of an elastic bridge-piece of flat material having horizontally disposed coils formed therein and arranged between the adjacent edges but forwardly of the posterior faces of the lenses, and having horizonally-extending portions attached to said lenses, and guards also attached to said lenses, the point of attachment thereof being substantially intermediate their length.

4. In eyeglasses, the combination with the lenses, of an elastic bridge-pieceformedof flat material and having horizontally-disposed coils formed therein and arranged forwardly of the posterior face of the lenses ,guards located directly in rear of said coils, and attached portions carried by said coils and guards and secured to said lenses, said coils lying in approximately the same horizontal plane with the point of attachment thereof.

5. In eyeglasses, the combination with the lenses, of a bridge-piece having its ends bent outwardly, forwardly, inwardly, thence rearwardly, and outwardly and attached to the lenses to form horizontally-disposed elastic coils, and guards attached to said lenses and located directly in rear of said coils.

6. In eyeglasses, a=spring made of flat material having a portion adapted to bear upon the nose of the wearer, and having its ends bent to form coils, the extremities of which extend rearwardly to the lens-attaching devices.

7 In eyeglasses, aspring made of flatmaterial having its ends extending outwardly, thence forwardly,doubled inwardly and thence extended rearwardly, to form attaching portions for the lens-attaching devices.

, LEO F. AD'I.

Witnesses:

WM. SHAW, CHARLES S: ALDRICH. 

